Vehicle bumper jack



March 28, 1950 J. ERIKAINEN VEHICLE BUMPER JACK Filed Jan. 13, 1947 Fig. 4.

Iuventor John Erikainen i aiented Mar. 28, 1950 UNITED STATES PATENT OFFICE VEHICLE BUMPER JACK John Erikaincn, Pelkie, Mich.

Application January 13, 1947, Serial No. 721,763 2 Claims. (Cl. 254-1) 1 This invention relates to new and useful improvements in jacks and more particularly to a bumper jack for vehicles.

The primary feature of the present invention is to provide a device of the character referred to adapted to hold the jack shaft rigidly in a vertical position under the lifted load and to prevent the upper end of said jack shaft from tipping in any direction.

Another important feature of this invention is to provide a jack of the class described which is quickly and easily collapsible to form a small compact structure which occupies very little space in packing or storing.

A further feature of the present invention is to provide a jack structure comprising means associated with the jack shaft adapted to prevent angular displacement and lateral thrust of the jack shaft in a lifting operation to eliminate the possibility of dangerous tilting thereof.

A still further feature of the present invention is to provide a jack structure of the character referred to that is strong and durable in construction, eflicient and reliable in operation, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view of the improved jack constructed in accordance with the present invention;

Figure 2 is a group perspective view thereof in folded position;

Figure 3 isa side elevational view of the jack with parts broken away and shown in section. and

Figure 4 is an enlarged sectional view taken on the line 4-4 of Figure 3.

Referring now to the drawing in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 represents an upstanding circular shaft having its lower end rounded and adapted to fit into a circular recess 8 centrally located in a base designated generally at I which is adapted to rest upon the ground or other supporting surface.

Said base preferably has its forward side edges tapering toward the forward edge thereof. The forward side edges are bent upwardly to form flange 8 and the forward edge of said base is bent upwardly to form a flange 9 having notches ID in each corner thereof.

The rear side edges of said base are bent upward to form flanges II which extend slightly above flanges 8, and said rear edges of said flanges H are turned inwardly to form substantially channel-shaped members designated generally at l2 between which the lower vertical ends 13 of a pair of upwardly and inwardly inclined arms H are pivotally connected on pins l5 carried by said channel "members.

The rear edge of said base is bent upwardly to form a curved flange l6 integrally cast wit said channel members i 2.

Downwardly inclined arms l1 extend radially from the hub l8 of said base and are corrugated or channel pressed to form ribs l9 to strengthen or reinforce said arms.

The upper ends 20 of arms M are turned outwardly and horizontally and are adapted to be secured by rivets or the like 2| on either side of a hanger arm 22 having its outer end extending horizontallyoutward from ends 20 and bent upwardly to form a hook 23 which is adapted to engage a rectangular vertical opening 24 in the upper flattened end 25 of shaft 5 when the lower end of said shaft is fitted in the recess 6 in hub I8 as shown in Figure l.

A conventional lifting body 26 may conveniently be formed as a one-piece casting provided with a central bore (not shown) through which the shaft 5 is inserted for operation in the usual manner by a handle 32 in a raising and lowering movement.

The upper end of said lifting body 26 is provided with a load engaging laterally projecting seat portion 28 adapted to be brought into engagement with the load to be raised, which for example may be the bumper of a vehicle (not shown).

The device being in a set-up-for-use position as shown in Figure 1 is easily and quickly collapsed by first disengaging the upper flattened end 25 of shaft 5 from hook 23 and swinging the handle and operating lever upwardly; the base 1 is then swung upwardly so that notches I0 engage the arms I4 and the upper edges of flanges 8 rest against said arms ll as is clearly shown in Figure 2, thereby making two very small portions that are conveniently packed ready for use.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in 3 this art. A more detailed description is accord-' ingly deemed unnecessary.

It is to be understood. however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein 7 described and the scope of l PWhat I claim is:

the appended claims.

1. A collapsible lifting Jack of the class described comprising a base, a pair of upwardly and inwardly inclined arms pivoted at their lower ends to said base, said base being swingable upwardly against said arms,"a hub centrally located in said base-having arecess therein, an upstanding shaft having one end rounded to fit into said recess, a lifting body including aload engaging member longitudinally movableon said shaft, means for moving the lifting bodyeon the shaft, an eye formed inthe upper endlfof said shaft, the

upper ends of said inclined terminating ln horizontal portions, and ahook held betweensaid horizontal portions fa'nd projecting I outwardly therefrom, said hook zbein'g received by; the eye to provide supportingflmeans for said shaf 4 2. A collapsible Jack including a base and an upstanding brace pivoted at its lower end to the base for folding one against the other, said brace including a pair of upwardly converging arms. and recesses provided in said base for engaging the arms in a folded position a vertical Jack shaft,

REFERENCES orrsn The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,709,506 Wallace et al Apr. 16, 1929 1,918,591 Dart July 18, 1933 2,212,539 Gunn Aug. 27, 1940 2,31%589 -Mandl M81. 23, 1943 

